Facile synthesis of integrated electrode-separator-electrolyte hydrogel for solid-state supercapacitor

IF 2.6 4区化学 Q3 ELECTROCHEMISTRY

Journal of Solid State Electrochemistry Pub Date : 2024-07-16 DOI:10.1007/s10008-024-06013-2

Yang Cao, Liming Qing, Junru Yao, Yan Wang, Ning Gu, Qiang Fu, Youyi Sun

引用次数: 0

Abstract

A new integrated electrode-separator-electrolyte hydrogel is designed and prepared, which is composed of organic liquid crystal, polyvinyl alcohol (PVA), polyaniline (PANI), and reduced graphene oxide (rGO). The organic liquid crystal is introduced into PVA hydrogel, effectively improving compatibility between active materials and hydrogel matrix. The PANI active material is in situ polymerized in hydrogel to prepare PANI-double-network hydrogel. It simultaneously acts as electrode, separator, and electrolyte for assembling flexible solid-state supercapacitor. It obtains an area-specific capacitance of 160.2 mF/cm² and a power density of 101.5 μW/cm² with an energy density of 21.0 μWh/cm². This work provides a new method to reduce interfacial resistance of electrode, separator, and electrolyte of flexible solid-state supercapacitor, further improving its electrochemical performance.

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用于固态超级电容器的集成电极分离器-电解质水凝胶的简易合成

设计并制备了一种由有机液晶、聚乙烯醇（PVA）、聚苯胺（PANI）和还原氧化石墨烯（rGO）组成的新型集成电分离器-电解质水凝胶。有机液晶被引入 PVA 水凝胶中，有效提高了活性材料与水凝胶基质的相容性。PANI 活性材料在水凝胶中原位聚合，制备出 PANI 双网水凝胶。它可同时充当电极、隔膜和电解质，用于组装柔性固态超级电容器。它获得了 160.2 mF/cm2 的特定面积电容和 101.5 μW/cm2 的功率密度以及 21.0 μWh/cm2 的能量密度。这项研究为降低柔性固态超级电容器的电极、隔膜和电解液的界面电阻提供了一种新方法，从而进一步提高了其电化学性能。

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来源期刊

Journal of Solid State Electrochemistry 工程技术-电化学

CiteScore

4.80

自引率

4.00%

发文量

227

审稿时长

4.1 months

期刊介绍： The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry. The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces. The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis. The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.